#define TAU 6.28319
void setup() {
Serial.begin(9600);
}
void loop() {
static float phase0, phase1, phase2;
phase0 += analogRead(A0) / ( TAU * 1024.);
phase1 += analogRead(A1) / ( TAU * 1024.);
phase2 += analogRead(A2) / ( TAU * 1024.);
Serial.print(cos(phase0)*100. + 100 );
Serial.print(" ");
Serial.print(cos(phase1)*100. + 400 );
Serial.print(" ");
Serial.println(cos(phase2)*100. + 700);
delay(50);
}